PDF malware analysis — malicious · 9c57719a6dca301c

MALICIOUS

PDF

72.6 KB Created: 2020-11-19 15:28:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04

MD5: 3764f702edca0302e4266e623f5e768b SHA-1: d8aca493b0087635a91f9eecfe29e69a6db7d3c6 SHA-256: 9c57719a6dca301c432a21fc2be77d3b4c824a8a97c74b3e6a32e94cdc9593a8

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://trafffe.ru/123?utm_term=pci+express+graphics+card+driver+download PDF link annotation
- https://cdn-cms.f-static.net/uploads/4422638/normal_5faf280c08bc4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379471/normal_5f8b7323d8f45.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378856/normal_5fa1255e56e66.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/limewub/38998084674.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1348473d-01ad-4602-8e35-053ce7df7c44/82966557437.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6c514db4-cc1e-4283-a45f-9eebb999464e/zitafazonafitejoxebova.pdfIn PDF document text
- https://s3.amazonaws.com/dudigonifu/fabjob_guide_to_become_a_life_coach.pdfIn PDF document text
- https://s3.amazonaws.com/wovigebi/vietnam_war_huey.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/93ba2434-3dc7-4716-9c3e-2761d87c0e77/57443625531.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b9c9418c-b9ed-4694-8c9f-762566e45bed/wojilofafiteru.pdfIn PDF document text
- https://s3.amazonaws.com/pukasojalu/2019_-_2020_pocket_planner.pdfIn PDF document text
- https://s3.amazonaws.com/degagaziv/ccdp_book.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000dc69.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDC69	5556 bytes
SHA-256: `e6a1fecb0acbf8f76aab3d3ad36e1dbc8158914d3dba1afcd6172b26b6c1bb39`
`font_01_sfnt_off0000ef59.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEF59	11744 bytes
SHA-256: `015a86fd532daef293608317286013f8b3a4a19512cc992e0f6db2f4b870e3a0`

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